UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Cascaded lattice Boltzmann method for thermal flows on standard lattices

Fei, L; Luo, KH; (2018) Cascaded lattice Boltzmann method for thermal flows on standard lattices. International Journal of Thermal Sciences , 132 pp. 368-377. 10.1016/j.ijthermalsci.2018.06.017. Green open access

[img]
Preview
Text
Fei_Cascaded lattice.pdf - ["content_typename_Published version" not defined]

Download (2MB) | Preview

Abstract

In this paper, a thermal cascaded lattice Boltzmann method (TCLBM) is developed in combination with the double-distribution-function (DDF) approach on the standard D2Q9 lattice. A density distribution function relaxed by the cascaded scheme based on central moments is employed to solve the flow field, and a total energy distribution function relaxed by the BGK scheme is used to solve the temperature field. The two distribution functions are coupled naturally to provide a new TCLBM. In this method, the viscous heat dissipation and compression work are taken into account, the Prandtl number and specific-heat ratio are adjustable, and the external force is considered directly without the Boussinesq assumption. The TCLBM is validated by numerical experiments of the thermal Couette flow, low-Mach number shock tube problem, Rayleigh-Bénard convection, and natural convection in a square cavity with a large temperature difference. The simulation results agree well with the analytical solutions and/or results given by previous researchers.

Type: Article
Title: Cascaded lattice Boltzmann method for thermal flows on standard lattices
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.ijthermalsci.2018.06.017
Publisher version: https://doi.org/10.1016/j.ijthermalsci.2018.06.017
Language: English
Additional information: © 2018 The Authors. Published by Elsevier Masson SAS. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/).
Keywords: Lattice Boltzmann method, Cascaded, Thermal flows
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/10052689
Downloads since deposit
55Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item